JP2012022914A - Battery for power tool - Google Patents

Battery for power tool Download PDF

Info

Publication number
JP2012022914A
JP2012022914A JP2010160444A JP2010160444A JP2012022914A JP 2012022914 A JP2012022914 A JP 2012022914A JP 2010160444 A JP2010160444 A JP 2010160444A JP 2010160444 A JP2010160444 A JP 2010160444A JP 2012022914 A JP2012022914 A JP 2012022914A
Authority
JP
Japan
Prior art keywords
voltage
voltage monitoring
monitoring unit
battery
cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2010160444A
Other languages
Japanese (ja)
Other versions
JP5462096B2 (en
Inventor
Toru Yamada
徹 山田
Hitoshi Suzuki
均 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Makita Corp
Original Assignee
Makita Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Makita Corp filed Critical Makita Corp
Priority to JP2010160444A priority Critical patent/JP5462096B2/en
Priority to CN201110120257.7A priority patent/CN102340043B/en
Priority to US13/180,150 priority patent/US8674660B2/en
Priority to EP11173651.8A priority patent/EP2408044B1/en
Priority to RU2011129168/07A priority patent/RU2563043C2/en
Publication of JP2012022914A publication Critical patent/JP2012022914A/en
Application granted granted Critical
Publication of JP5462096B2 publication Critical patent/JP5462096B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

PROBLEM TO BE SOLVED: To improve reliability related to the overcharge or the like of a battery for power tool even in the occurrence of poor wiring connection or the like between a voltage monitoring part and a cell, by enabling another voltage monitoring part to monitor the voltage of the cell.SOLUTION: A battery for power tool comprises a plurality of cells S3 and S4 connected in series and is constituted so that the voltage of the cells S3 and S4 is double-monitored by voltage monitoring parts 32 and 33 when the battery is charged or discharged. Voltage signal extraction portions 24a and 24b corresponding respectively to the voltage monitoring parts 32 and 33 are formed on a lead plate 24 which electrically connects an electrode of the cell S3 and an electrode of the cell S4, and the voltage signal extraction portions 24a and 24b are respectively connected to the voltage monitoring parts 32 and 33 through separate conductors 36 and 36c, and 37 and 37c.

Description

本発明は、直列に接続された複数のセルを備え、充放電時に個々のセルの電圧を複数の電圧監視部で多重監視できるように構成された電動工具用バッテリに関する。   The present invention relates to a battery for an electric tool that includes a plurality of cells connected in series, and is configured to be able to multiplexly monitor the voltage of each cell with a plurality of voltage monitoring units during charging and discharging.

電動工具用バッテリ１００では、図６に示すように、セルＳ１〜Ｓｎに対する過充電等を防止するために、個々のセルＳ１〜Ｓｎの電圧を二台の電圧監視部１０１，１０２で二重に監視している。これにより、仮に、いずれか一方の電圧監視部が故障しても、他方の電圧監視部が動作することで、過充電等を防止できるようになる。なお、図６ではセルＳ１以外のセルＳ２〜Ｓｎを監視する電圧監視部は省略されている。
図７は、セルＳ１の負電極とセルＳ２の正電極との接続部分の電位を二台の電圧監視部１０１，１０２まで導くための具体的な配線構造が模式斜視図で表されている。前記セルＳ１の負電極とセルＳ２の正電極とはリード板１０４により電気的に接続されており、そのリード板１０４の上辺中央に帯板状の電圧信号取出し部位１０４ｖが上方に延びるように形成されている。そして、前記電圧信号取出し部位１０４ｖの上端部が電圧監視部１０１，１０２を備える基板１０５の端子１０５ｔに接続されている。さらに、基板１０５の端子１０５ｔとそれぞれの電圧監視部１０１，１０２とはその基板１０５にプリントされた導体１０７によって電気的に接続されている。 In the power tool battery 100, as shown in FIG. 6, in order to prevent overcharging of the cells S1 to Sn, the voltages of the individual cells S1 to Sn are duplicated by the two voltage monitoring units 101 and 102. Monitoring. As a result, even if one of the voltage monitoring units fails, the other voltage monitoring unit operates to prevent overcharge or the like. In FIG. 6, the voltage monitoring unit that monitors the cells S2 to Sn other than the cell S1 is omitted.
FIG. 7 is a schematic perspective view showing a specific wiring structure for guiding the potential of the connection portion between the negative electrode of the cell S1 and the positive electrode of the cell S2 to the two voltage monitoring units 101 and 102. The negative electrode of the cell S1 and the positive electrode of the cell S2 are electrically connected by a lead plate 104, and a strip-like voltage signal extraction part 104v is formed to extend upward at the center of the upper side of the lead plate 104. Has been. And the upper end part of the said voltage signal extraction site | part 104v is connected to the terminal 105t of the board | substrate 105 provided with the voltage monitoring parts 101 and 102. FIG. Further, the terminal 105 t of the substrate 105 and the voltage monitoring units 101 and 102 are electrically connected by a conductor 107 printed on the substrate 105.

図８は、別の電動工具用バッテリ１１０であり、二本のセルＳの負電極と二本のセルＳの正電極とを接続するリード板１１４を備えている。リード板１１４には、中央に電圧信号取出し部位１１４ｖが形成されており、その電圧信号取出し部位１１４ｖと電圧監視部（図示省略）が取付けられている基板１１５の端子（図示省略）とが信号線１１４ｒによって電気的に接続されている。   FIG. 8 shows another battery 110 for an electric tool, which includes a lead plate 114 that connects the negative electrodes of the two cells S and the positive electrodes of the two cells S. The lead plate 114 is formed with a voltage signal extraction portion 114v in the center, and the voltage signal extraction portion 114v and a terminal (not shown) of the substrate 115 to which a voltage monitoring unit (not shown) is attached are signal lines. 114r is electrically connected.

上記した電動工具用バッテリ１００，１１０では、セルＳの電極に接続されたリード板１０４，１１４と二台の電圧監視部１０１，１０２を備える基板１０５，１１５との間が一本の電圧信号取出し部位１０４ｖ、あるいは信号線１１４ｒによって接続されている。このため、例えば、前記電圧信号取出し部位１０４ｖ等と基板１０５との接続部位で配線の接続不良が発生すると、二台の電圧監視部１０１，１０２が正常であっても、セルＳ１〜Ｓｎに対する過充電等の監視ができなくなる。   In the power tool batteries 100 and 110 described above, one voltage signal is extracted between the lead plates 104 and 114 connected to the electrodes of the cell S and the substrates 105 and 115 including the two voltage monitoring units 101 and 102. It is connected by the part 104v or the signal line 114r. For this reason, for example, if a wiring connection failure occurs at the connection portion between the voltage signal extraction portion 104v and the substrate 105, the excess of the cells S1 to Sn is exceeded even if the two voltage monitoring units 101 and 102 are normal. It becomes impossible to monitor charging.

本発明は、上記問題点を解決するためになされたものであり、本発明が解決しようとする課題は、一の電圧監視部とセル間の配線で接続不良等が発生した場合でも他の電圧監視部でセルの電圧監視を可能にして、電動工具用バッテリの過充電等に対する信頼性を向上させることである。   The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is that even if a connection failure or the like occurs in one voltage monitoring unit and a wiring between cells, The monitoring unit enables cell voltage monitoring to improve the reliability against overcharging of the power tool battery.

上記した課題は、各請求項の発明によって解決される。
請求項１の発明は、複数のセルを備え、充放電時に個々のセルの電圧を複数の電圧監視部で多重監視できるように構成された電動工具用バッテリであって、前記セルの電極に接続されるリード板には、前記複数の電圧監視部のそれぞれに対応する複数の電圧信号取出し部位が形成されており、各々の電圧信号取出し部位と各々の電圧監視部とがそれぞれ別々の導体を介して電気的に接続されていることを特徴とする。 The above-described problems are solved by the inventions of the claims.
The invention of claim 1 is a battery for an electric tool comprising a plurality of cells and configured to be able to multiplexly monitor the voltage of each cell by a plurality of voltage monitoring units during charging and discharging, and is connected to the electrodes of the cells The lead plate is formed with a plurality of voltage signal extraction portions corresponding to each of the plurality of voltage monitoring portions, and each voltage signal extraction portion and each voltage monitoring portion are respectively connected via separate conductors. And is electrically connected.

本発明によると、リード板に形成された各々の電圧信号取出し部位と各々の電圧監視部とがそれぞれ別々の導体を介して電気的に接続されている。このため、一の電圧監視部とリード板の対応する電圧信号取出し部位との間の配線で接続不良等が発生しても、他の電圧監視部で前記セルの電圧監視を継続して実施できる。
したがって、電動工具用バッテリの過充電等の防止構造に対する信頼性が向上する。 According to the present invention, each voltage signal extraction portion formed on the lead plate and each voltage monitoring unit are electrically connected via separate conductors. For this reason, even if a connection failure or the like occurs in the wiring between one voltage monitoring unit and the corresponding voltage signal extraction part of the lead plate, the voltage monitoring of the cell can be continuously performed by another voltage monitoring unit. .
Therefore, the reliability of the structure for preventing overcharging of the power tool battery is improved.

請求項２の発明によると、個々のセルの電圧を監視する複数の電圧監視部は、異なる電圧で動作するように構成されていることを特徴とする。
請求項３の発明によると、個々のセルの電圧を監視する第１の電圧監視部と第２の電圧監視部とを備えており、前記第１の電圧監視部、前記第２の電圧監視部は、充電時の上限電圧を設定でき、前記セルの電圧が上限設定電圧より上昇したときに電圧上限信号を出力できるように構成されており、前記第２の電圧監視部の上限設定電圧が第１の電圧監視部の上限設定電圧よりも大きく設定されていることを特徴とする。
請求項４の発明によると、第１の電圧監視部、前記第２の電圧監視部は、放電時の下限電圧を設定でき、前記セルの電圧が下限設定電圧より低下したときに電圧下限信号を出力できるように構成されており、前記第２の電圧監視部の下限設定電圧が第１の電圧監視部の下限設定電圧よりも大きく設定されていることを特徴とする。 According to a second aspect of the present invention, the plurality of voltage monitoring units that monitor the voltage of each cell are configured to operate at different voltages.
According to the invention of claim 3, the first voltage monitoring unit and the second voltage monitoring unit that monitor the voltage of each cell are provided, the first voltage monitoring unit and the second voltage monitoring unit. Is configured to be able to set an upper limit voltage during charging and to output a voltage upper limit signal when the voltage of the cell rises above the upper limit set voltage, and the upper limit set voltage of the second voltage monitoring unit is 1 is set to be larger than the upper limit set voltage of the voltage monitoring unit.
According to the invention of claim 4, the first voltage monitoring unit and the second voltage monitoring unit can set a lower limit voltage at the time of discharging, and when the voltage of the cell falls below the lower limit set voltage, the voltage lower limit signal is output. The lower limit setting voltage of the second voltage monitoring unit is set to be larger than the lower limit setting voltage of the first voltage monitoring unit.

このため、例えば、第１、第２の電圧監視部及びそれらの配線が正常であれば、充電時には、最初に第１の電圧監視部が電圧上限信号を出力し、次に第２の電圧監視部が電圧上限信号を出力するようになる。また、放電時には、最初に第２の電圧監視部が電圧下限信号を出力し、次に第１の電圧監視部が電圧下限信号を出力するようになる。
したがって、第１、第２の電圧監視部の動作順序等から電圧監視部の故障や配線不良等を早期に発見できるようになる。 For this reason, for example, if the first and second voltage monitoring units and their wiring are normal, the first voltage monitoring unit first outputs a voltage upper limit signal and then the second voltage monitoring during charging. The unit outputs a voltage upper limit signal. At the time of discharging, the second voltage monitoring unit first outputs the voltage lower limit signal, and then the first voltage monitoring unit outputs the voltage lower limit signal.
Therefore, a failure of the voltage monitoring unit, a wiring defect, or the like can be found at an early stage from the operation order of the first and second voltage monitoring units.

請求項５の発明によると、第２の電圧監視部の上限設定電圧は、セル固有の上限充電電圧よりも低い電圧に設定されていることを特徴とする。
このため、セル固有の上限充電電圧を超える前に第２の電圧監視部が動作するようになり、過充電を未然に防止できる。 According to the invention of claim 5, the upper limit setting voltage of the second voltage monitoring unit is set to a voltage lower than the upper limit charging voltage specific to the cell.
For this reason, the second voltage monitoring unit operates before exceeding the cell-specific upper limit charging voltage, and overcharge can be prevented in advance.

請求項６の発明によると、電圧監視部は基板に取付けられており、リード板の電圧信号取出し部位は、そのリード板から帯状に張出してその先端部が前記基板の対応する端子に接続されていることを特徴とする。
このように、リード板を基板の位置まで延ばす構成のため、配線不良が発生し難くなる。
請求項７の発明によると、電圧監視部は基板に取付けられており、リード板の電圧信号取出し部位と前記基板の端子間が信号線によって接続されていることを特徴とする。
これにより、リード板の形状が複雑化せず、リード板の成形が容易になる。 According to the sixth aspect of the present invention, the voltage monitoring unit is attached to the substrate, and the voltage signal extraction portion of the lead plate extends in a band shape from the lead plate, and the tip portion is connected to the corresponding terminal of the substrate. It is characterized by being.
As described above, the configuration in which the lead plate is extended to the position of the substrate makes it difficult for wiring defects to occur.
According to a seventh aspect of the present invention, the voltage monitoring section is attached to the substrate, and the voltage signal extraction portion of the lead plate and the terminal of the substrate are connected by the signal line.
Thereby, the shape of the lead plate is not complicated, and the lead plate can be easily formed.

本発明によると、一の電圧監視部とセル間の配線で接続不良等が発生した場合でも他の電圧監視部によってセルの電圧監視が可能になるため、電動工具用バッテリの過充電等に対する信頼性が向上する。   According to the present invention, even when a connection failure or the like occurs in the wiring between one voltage monitoring unit and the cell, the voltage of the cell can be monitored by another voltage monitoring unit. Improves.

本発明の実施形態１に係る電動工具用バッテリの配線構造を表す模式斜視図である。It is a model perspective view showing the wiring structure of the battery for electric tools which concerns on Embodiment 1 of this invention. 本発明の実施形態１に係る電動工具用バッテリの分解斜視図である。It is a disassembled perspective view of the battery for electric tools which concerns on Embodiment 1 of this invention. 前記電動工具用バッテリにおけるセルの電圧監視状況を表す回路図である。It is a circuit diagram showing the voltage monitoring condition of the cell in the said battery for electric tools. 前記電動工具用バッテリの充電時と放電時における電圧監視部の動作を表すグラフである。It is a graph showing operation | movement of the voltage monitoring part at the time of charge and discharge of the battery for electric tools. 変形例に係る電動工具用バッテリの配線構造を表す模式斜視図である。It is a model perspective view showing the wiring structure of the battery for electric tools which concerns on a modification. 従来の電動工具用バッテリにおけるセルの電圧監視状況を表す模式回路図である。It is a schematic circuit diagram showing the voltage monitoring condition of the cell in the conventional battery for electric tools. 従来の電動工具用バッテリの配線構造を表す斜視図である。It is a perspective view showing the wiring structure of the conventional battery for electric tools. 従来の電動工具用バッテリの配線構造を表す模式斜視図である。It is a model perspective view showing the wiring structure of the conventional battery for electric tools.

（実施形態１）
以下、図１から図５に基づいて、本発明の実施形態１に係る電動工具用バッテリ１０の説明を行なう。ここで、図中の前後左右及び上下は、電動工具用バッテリ１０の前後左右及び上下に対応している。 (Embodiment 1)
Hereinafter, based on FIGS. 1-5, the battery 10 for electric tools which concerns on Embodiment 1 of this invention is demonstrated. Here, front and rear, right and left, and top and bottom in the figure correspond to front and rear, right and left and top and bottom of the power tool battery 10.

＜電動工具用バッテリ１０の概要について＞
電動工具用バッテリ１０は、図２に示すように、バッテリケース１０ｃを備えており、そのバッテリケース１０ｃが上部開放型のケース本体部１２と、そのケース本体部１２の開口３２ｈを塞ぐ蓋部１４とから構成されている。ケース本体部１２内には、四本の円柱形のセルＳ１〜Ｓ４が軸心をそのケース本体部１２の幅方向（左右方向）と一致させた状態で、前後に並べられて配置されている。四本のセルＳ１〜Ｓ４には、それらのセルＳ１〜Ｓ４をケース本体部１２内で位置決めするためのセルカバー２０が上から被せられている。さらに、セルカバー２０の側面には、四本のセルＳ１〜Ｓ４を電気的に直列接続するための第１〜第５リード板２１，２２，２３，２４，２５が所定位置に取付けられている。即ち、図３の回路図に示すように、第１リード板２１がセルＳ１の負電極に接続されており、第２リード板２２がセルＳ１の正電極とセルＳ２の負電極に接続されている。また、第３リード板２３がセルＳ２の正電極とセルＳ３の負電極に接続されており、第４リード板２４がセルＳ３の正電極とセルＳ４の負電極に接続されている。そして、第５リード板２５がセルＳ４の正電極に接続されている。 <About Outline of Battery 10 for Electric Tool>
As shown in FIG. 2, the power tool battery 10 includes a battery case 10 c, and the battery case 10 c closes the upper open-type case main body 12 and the opening 14 h of the case main body 12. It consists of and. In the case main body part 12, four cylindrical cells S1 to S4 are arranged side by side in the front-rear direction with the axial center aligned with the width direction (left-right direction) of the case main body part 12. . The four cells S1 to S4 are covered with a cell cover 20 for positioning the cells S1 to S4 in the case body 12 from above. Further, on the side surface of the cell cover 20, first to fifth lead plates 21, 22, 23, 24, 25 for electrically connecting the four cells S1 to S4 in series are attached at predetermined positions. . That is, as shown in the circuit diagram of FIG. 3, the first lead plate 21 is connected to the negative electrode of the cell S1, and the second lead plate 22 is connected to the positive electrode of the cell S1 and the negative electrode of the cell S2. Yes. The third lead plate 23 is connected to the positive electrode of the cell S2 and the negative electrode of the cell S3, and the fourth lead plate 24 is connected to the positive electrode of the cell S3 and the negative electrode of the cell S4. The fifth lead plate 25 is connected to the positive electrode of the cell S4.

また、セルカバー２０の上側には、図２に示すように、電動工具用バッテリ１０の電気回路の基板３０が配置されている。基板３０には、図３に示すように、各々のセルＳ１〜Ｓ４の電圧を監視するNo11〜 No14電圧監視部３２、No21電圧監視部３３と、セルＳ１〜Ｓ４の温度検出回路（図示省略）等が設けられている。また、基板３０には、図２に示すように、電動工具のターミナル（図示省略）、あるいは充電器のターミナル（図示省略）が接続されるバッテリターミナル３５が取付けられている。バッテリターミナル３５は、図３に示すように、電動工具用バッテリ１０のプラスターミナルＰ、マイナスターミナルＮ、電圧上限信号用ターミナルＯＶ１，ＯＶ２、及び電圧下限信号用ターミナルＵＶ１等から構成されている。
図２に示すように、バッテリケース１０ｃの蓋部１４には、電動工具の連結部（図示省略）、あるいは充電器の連結部（図示省略）と連結可能に構成された左右一対のレール部１４ｃが形成されている。そして、それらのレール部１４ｃ間に電動工具のターミナル（図示省略）、あるいは充電器のターミナル（図示省略）をバッテリターミナル３５まで導く複数の案内スリット１４ｓが形成されている。 Further, as shown in FIG. 2, an electric circuit board 30 of the power tool battery 10 is disposed on the upper side of the cell cover 20. As shown in FIG. 3, the substrate 30 has a No11 to No14 voltage monitoring unit 32 and a No21 voltage monitoring unit 33 for monitoring the voltages of the cells S1 to S4, and a temperature detection circuit (not shown) for the cells S1 to S4. Etc. are provided. Further, as shown in FIG. 2, a battery terminal 35 to which a terminal (not shown) of an electric tool or a terminal (not shown) of a charger is connected is attached to the substrate 30. As shown in FIG. 3, the battery terminal 35 includes a plus terminal P, a minus terminal N, voltage upper limit signal terminals OV1 and OV2, a voltage lower limit signal terminal UV1 and the like of the power tool battery 10.
As shown in FIG. 2, the lid portion 14 of the battery case 10c has a pair of left and right rail portions 14c configured to be connectable to a connecting portion (not shown) of an electric tool or a connecting portion (not shown) of a charger. Is formed. A plurality of guide slits 14 s for guiding a power tool terminal (not shown) or a charger terminal (not shown) to the battery terminal 35 are formed between the rail portions 14 c.

＜電圧監視部３２，３３について＞
No11〜 No14電圧監視部３２は、図３に示すように、対応するセルＳ１〜Ｓ４の電圧をそれぞれ監視するＩＣであり、充電時にセルＳ１〜Ｓ４の電圧が上限設定電圧ＯＶ１よりも上昇したときに、電圧上限信号Ｒを出力できるように構成されている。また、電動工具用バッテリ１０が電動工具で使用されているとき（放電時）にセルＳ１〜Ｓ４の電圧が下限設定電圧ＵＶ１よりも下降したときに、電圧下限信号Ｔを出力できるように構成されている。
No21電圧監視部３３は、No11〜 No14電圧監視部３２と平行して対応するセルＳ１〜Ｓ４の電圧をそれぞれ監視するＩＣである。即ち、図３に示すように、No21電圧監視部３３がセルＳ１，Ｓ２，Ｓ３，Ｓ４のそれぞれの電圧を監視できるように構成されている。そして、充電時にセルＳ１〜Ｓ４の電圧が上限設定電圧ＯＶ２よりも上昇したときに電圧上限信号Ｘを出力できるように構成されている。
ここで、No21電圧監視部３３の上限設定電圧ＯＶ２は、セル固有の上限充電電圧よりも小さな値、例えば、4.2Vに設定されている。また、No11〜 No14電圧監視部３２の上限設定電圧ＯＶ１は、例えば、4.1Vに設定されており、下限設定電圧ＵＶ１は、例えば、1.5Vに設定されている。ここで、No11〜 No14電圧監視部３２の上限設定電圧ＯＶ１は、セルＳ１〜Ｓ４が満充電されたときの電圧に設定されている。
即ち、No11〜 No14電圧監視部３２が本発明の第１の電圧監視部に相当し、No21電圧監視部３３が本発明の第２の電圧監視部に相当する。 <About the voltage monitoring units 32 and 33>
As shown in FIG. 3, the No11 to No14 voltage monitoring units 32 are ICs that monitor the voltages of the corresponding cells S1 to S4, respectively, and when the voltages of the cells S1 to S4 rise above the upper limit set voltage OV1 during charging. In addition, the voltage upper limit signal R can be output. Further, when the power tool battery 10 is used in a power tool (when discharging), the voltage lower limit signal T can be output when the voltage of the cells S1 to S4 drops below the lower limit setting voltage UV1. ing.
The No21 voltage monitoring unit 33 is an IC that monitors the voltages of the corresponding cells S1 to S4 in parallel with the No11 to No14 voltage monitoring unit 32, respectively. That is, as shown in FIG. 3, the No21 voltage monitoring unit 33 is configured to monitor each voltage of the cells S1, S2, S3, and S4. And it is comprised so that the voltage upper limit signal X can be output when the voltage of cell S1-S4 rises from the upper limit setting voltage OV2 at the time of charge.
Here, the upper limit setting voltage OV2 of the No21 voltage monitoring unit 33 is set to a value smaller than the cell-specific upper limit charging voltage, for example, 4.2V. Further, the upper limit setting voltage OV1 of the No11 to No14 voltage monitoring unit 32 is set to, for example, 4.1V, and the lower limit setting voltage UV1 is set to, for example, 1.5V. Here, the upper limit setting voltage OV1 of the No11 to No14 voltage monitoring unit 32 is set to a voltage when the cells S1 to S4 are fully charged.
That is, the No11 to No14 voltage monitoring unit 32 corresponds to the first voltage monitoring unit of the present invention, and the No21 voltage monitoring unit 33 corresponds to the second voltage monitoring unit of the present invention.

このため、電動工具用バッテリ１０の充電時に、図４に示すように、セルＳ１〜Ｓ４の電圧が上昇して上限設定電圧ＯＶ１を超えると、先ず、No11〜 No14電圧監視部３２が電圧上限信号Ｒを出力する。これにより、セルＳ１〜Ｓ４が満充電されたことが分かる。そして、充電器が前記上限設定電圧ＯＶ１を受けて充電を終了する。しかし、何らかの異常により充電が継続されて、セルＳ１〜Ｓ４の電圧が上限設定電圧ＯＶ２を超えると、No21電圧監視部３３が電圧上限信号Ｘを出力する。これにより、セルＳ１〜Ｓ４が過充電直前であることが分かる。そして、前記充電器が前記電圧上限信号Ｘを受けて充電を終了する。
なお、セルＳ１〜Ｓ４の電圧が上限設定電圧ＯＶ１を超えたとき、あるいは、充電器が満充電検出を行なったとき、あるいはセルＳ１〜Ｓ４の電圧が上限設定電圧ＯＶ２を超えたときのいずれかで、充電を終了させるようにすることも可能である。
また、電動工具用バッテリ１０を電動工具に使用しているとき、即ち、放電中に、セルＳ１〜Ｓ４の電圧が下降して下限設定電圧ＵＶ１より低下すると、No11〜 No14電圧監視部３２が電圧下限信号Ｔを出力する。これにより、前記電動工具が前記電圧下限信号Ｔを受けてモータを停止させる。 For this reason, when the power tool battery 10 is charged, as shown in FIG. 4, when the voltage of the cells S1 to S4 rises and exceeds the upper limit set voltage OV1, first, the No11 to No14 voltage monitoring unit 32 outputs the voltage upper limit signal. R is output. Thereby, it turns out that cell S1-S4 was fully charged. Then, the charger receives the upper limit setting voltage OV1 and ends the charging. However, when charging is continued due to some abnormality and the voltage of the cells S1 to S4 exceeds the upper limit set voltage OV2, the No21 voltage monitoring unit 33 outputs the voltage upper limit signal X. Thereby, it turns out that cell S1-S4 is immediately before overcharge. And the said charger receives the said voltage upper limit signal X, and complete | finishes charge.
Note that either when the voltage of the cells S1 to S4 exceeds the upper limit set voltage OV1, or when the charger detects full charge, or when the voltage of the cells S1 to S4 exceeds the upper limit set voltage OV2. It is also possible to end the charging.
In addition, when the power tool battery 10 is used for a power tool, that is, during discharge, when the voltage of the cells S1 to S4 drops and falls below the lower limit set voltage UV1, the No11 to No14 voltage monitoring unit 32 sets the voltage. A lower limit signal T is output. Thereby, the electric tool receives the voltage lower limit signal T and stops the motor.

＜電圧監視部３２，３３とセルＳ１〜Ｓ４間の配線構造について＞
次に、図１の模式図に基づいて、電圧監視部３２，３３とセルＳ１〜Ｓ４間の配線構造について説明する。図１は、セルＳ３の正電極とセルＳ４の負電極との接続部位の電位Ｖ３（図３参照）、即ち、第４リード板２４の電位Ｖ３をNo13電圧監視部３２、及びNo21電圧監視部３３まで導くための配線構造を例示している。
図１、図２に示すように、第４リード板２４は、横に長い略角形のリード板本体部２４ｍと、そのリード板本体部２４ｍの上辺から上方に張出した帯板状の第１電圧信号取出し部位２４ａ、及び第２電圧信号取出し部位２４ｂとから構成されている。そして、第４リード板２４のリード板本体部２４ｍにセルＳ３の正電極とセルＳ４の負電極とが接続されるようになっている。また、第１電圧信号取出し部位２４ａと第２電圧信号取出し部位２４ｂの先端部（上端部）は、それぞれ基板３０に形成された第１端子３６と第２端子３７とに接続されている。そして、第１端子３６が基板３０にプリントされた導体３６ｃによってNo13電圧監視部３２の入力端子に接続されている。また、第２端子３７が同じく基板３０にプリントされた導体３７ｃによってNo21電圧監視部３２の入力端子に接続されている。 <About the wiring structure between the voltage monitoring units 32 and 33 and the cells S1 to S4>
Next, a wiring structure between the voltage monitoring units 32 and 33 and the cells S1 to S4 will be described based on the schematic diagram of FIG. FIG. 1 shows the potential V3 (see FIG. 3) at the connection portion between the positive electrode of the cell S3 and the negative electrode of the cell S4, that is, the potential V3 of the fourth lead plate 24, the No13 voltage monitoring unit 32 and the No21 voltage monitoring unit. The wiring structure for leading to 33 is illustrated.
As shown in FIG. 1 and FIG. 2, the fourth lead plate 24 includes a substantially rectangular lead plate main body portion 24m that is long and a strip plate-like first voltage projecting upward from the upper side of the lead plate main body portion 24m. It consists of a signal extraction part 24a and a second voltage signal extraction part 24b. The positive electrode of the cell S3 and the negative electrode of the cell S4 are connected to the lead plate body 24m of the fourth lead plate 24. The tip portions (upper end portions) of the first voltage signal extraction portion 24 a and the second voltage signal extraction portion 24 b are connected to a first terminal 36 and a second terminal 37 formed on the substrate 30, respectively. The first terminal 36 is connected to the input terminal of the No. 13 voltage monitoring unit 32 by a conductor 36 c printed on the substrate 30. The second terminal 37 is connected to the input terminal of the No21 voltage monitoring unit 32 by a conductor 37c printed on the substrate 30.

上記構成により、図１において、例えば、第４リード板２４の第１電圧信号取出し部位２４ａと基板３０の第１端子３６と接続部位で経時的に接続不良が発生した場合でも、第４リード板２４の電位Ｖ３が第２電圧信号取出し部位２４ｂ、第２端子３７等を介してNo21電圧監視部３３に導かれる。即ち、No21電圧監視部３３で第４リード板２４の電位Ｖ３を監視できるようになる。
このため、配線の接続不良等でNo13電圧監視部３２、No21電圧監視部３３が共に使用不能になる確率が大幅に減少し、電動工具用バッテリ１０の過充電、過放電の防止構造に対する信頼性が向上する。
ここで、第３リード板２３の電位Ｖ２をNo12電圧監視部３２、及びNo21電圧監視部３３まで導くための配線構造、及び第２リード板２２の電位Ｖ１をNo11電圧監視部３２、及びNo21電圧監視部３３まで導くための配線構造も上記と同様である。また、セルＳ４の正電極の電位Ｖ４、及びセルＳ１の負電極の電位Ｖ０は、基板３０にプリントされた導体（図示省略）によってNo11 、No14電圧監視部３２、及びNo21電圧監視部３３に導かれる。 With the above configuration, in FIG. 1, for example, even when a connection failure occurs with time at the first voltage signal extraction portion 24 a of the fourth lead plate 24 and the first terminal 36 of the substrate 30 and the connection portion, the fourth lead plate The potential V3 of 24 is led to the No21 voltage monitoring unit 33 through the second voltage signal extraction part 24b, the second terminal 37, and the like. That is, the No. 21 voltage monitoring unit 33 can monitor the potential V3 of the fourth lead plate 24.
For this reason, the probability that both the No13 voltage monitoring unit 32 and the No21 voltage monitoring unit 33 become unusable due to poor connection of wiring is greatly reduced, and the reliability of the overcharge and overdischarge prevention structure of the power tool battery 10 is reduced. Will improve.
Here, the wiring structure for guiding the potential V2 of the third lead plate 23 to the No12 voltage monitoring unit 32 and the No21 voltage monitoring unit 33, and the potential V1 of the second lead plate 22 are No11 voltage monitoring unit 32 and No21 voltage. The wiring structure for leading to the monitoring unit 33 is the same as described above. The potential V4 of the positive electrode of the cell S4 and the potential V0 of the negative electrode of the cell S1 are guided to the No11, No14 voltage monitoring unit 32, and No21 voltage monitoring unit 33 by a conductor (not shown) printed on the substrate 30. It is burned.

＜本実施形態に係る電動工具用バッテリ１０の長所について＞
本実施形態に係る電動工具用バッテリ１０によると、リード板２４に形成された各々の電圧信号取出し部位２４ａ，２４ｂと各々の電圧監視部３２，３３とがそれぞれ別々の導体３６，３７等によって電気的に接続されている。このため、一の電圧監視部３２とリード板２４の対応する電圧信号取出し部位２４ａとの間の配線で接続不良等が発生しても、他の電圧監視部３３でセルの電圧監視を継続して実施できる。
したがって、電動工具用バッテリ１０の過充電等を確実に防止でき、信頼性が向上する。 <Advantages of Battery 10 for Electric Tool According to this Embodiment>
According to the power tool battery 10 according to the present embodiment, the voltage signal extraction parts 24a and 24b formed on the lead plate 24 and the voltage monitoring parts 32 and 33 are electrically connected by separate conductors 36 and 37, respectively. Connected. For this reason, even if a connection failure or the like occurs in the wiring between one voltage monitoring unit 32 and the corresponding voltage signal extraction portion 24a of the lead plate 24, the voltage monitoring of the cell is continued in the other voltage monitoring unit 33. Can be implemented.
Therefore, overcharge of the power tool battery 10 can be reliably prevented, and the reliability is improved.

また、No21電圧監視部３３（第２の電圧監視部３３）の上限設定電圧ＯＶ２はNo11〜 No14電圧監視部３２（第１の電圧監視部３２）の上限設定電圧ＯＶ１よりも大きな値に設定されている。このため、充電時、あるいは放電時の第１の電圧監視部３２と第２の電圧監視部３３の動作順序から電圧監視部３２，３３の故障や配線不良等を早期に発見できるようになる。
また、No21電圧監視部３３（第２の電圧監視部３３）の上限設定電圧ＯＶ２は、セルＳ１〜Ｓ４の上限充電電圧よりも低い値に設定されているため、何らかの異常により充電が継続された場合でも、セルＳ１〜Ｓ４が上限電圧を超える直前であることを検知でき過充電を未然に防止できる。
さらに、第１の電圧監視部３２と第２の電圧監視部３３は基板３０に取付けられており、リード板２４の電圧信号取出し部位２４ａ，２４ｂは、そのリード板２４から帯状に張出してその先端部が基板３０の対応する端子３６，３７に接続されている。このように、リード板２４を基板３０の位置まで延ばす構成のため、配線不良が発生し難くなる。 Further, the upper limit setting voltage OV2 of the No21 voltage monitoring unit 33 (second voltage monitoring unit 33) is set to a value larger than the upper limit setting voltage OV1 of the No11 to No14 voltage monitoring unit 32 (first voltage monitoring unit 32). ing. For this reason, it becomes possible to detect a failure of the voltage monitoring units 32 and 33, a wiring defect, etc. at an early stage from the operation sequence of the first voltage monitoring unit 32 and the second voltage monitoring unit 33 during charging or discharging.
Moreover, since the upper limit set voltage OV2 of the No21 voltage monitor 33 (second voltage monitor 33) is set to a value lower than the upper limit charge voltage of the cells S1 to S4, the charging is continued due to some abnormality. Even in this case, it can be detected that the cells S1 to S4 are just before the upper limit voltage, and overcharge can be prevented in advance.
Further, the first voltage monitoring unit 32 and the second voltage monitoring unit 33 are attached to the substrate 30, and the voltage signal extraction portions 24 a and 24 b of the lead plate 24 project from the lead plate 24 in a band shape and the tips thereof. The part is connected to the corresponding terminals 36 and 37 of the substrate 30. As described above, since the lead plate 24 extends to the position of the substrate 30, wiring defects are less likely to occur.

＜変更例＞
ここで、本発明は上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲における変更が可能である。例えば、本実施形態では、図１等に示すように、リード板本体部２４ｍの上辺から上方に帯板状の電圧信号取出し部位２４ａ，２４ｂを張出させ、それらの電圧信号取出し部位２４ａ，２４ｂの先端を基板３０の端子３６，３７に接続させる例を示した。しかし、図５に示すように、リード板本体部２４ｍの上辺一端側と他端側に電圧信号取出し部位２４ａ，２４ｂを設け、それらの電圧信号取出し部位２４ａ，２４ｂと基板３０の端子３６，３７との間を信号線３８，３９で接続する構成でも可能である。このように、信号線３８，３９を使用することで、リード板２４の形状が複雑化せず、成形が容易になる。
また、本実施形態では、No11〜 No14電圧監視部３２でのみ下限設定電圧ＵＶ１を設定できるようにしたが、No11〜 No14電圧監視部３２とNo21電圧監視部３３との双方で下限設定電圧を設定できるようにすることも可能である。この場合、No11〜 No14電圧監視部３２の下限設定電圧ＵＶ１とNo21電圧監視部３３の下限設定電圧ＵＶ２との値を変えるのが好ましい。これにより、放電時のNo11〜 No14電圧監視部３２とNo21電圧監視部３３の動作順序から電圧監視部３２，３３の故障や配線不良等を早期に発見できるようになる。
また、本実施形態では、No11〜 No14電圧監視部３２でそれぞれのセルＳ１〜Ｓ４の電圧を監視する例を示したが、例えば、一台の電圧監視部でそれぞれのセルＳ１〜Ｓ４の電圧を監視するようにしても良い。また、No21電圧監視部３３を複数に分割することも可能である。
さらに、充電時にセルＳ１〜Ｓ４の電圧が上昇してNo21電圧監視部３３の上限設定電圧ＯＶ２を超えた場合（No21電圧監視部３３が動作した場合）に、電動工具用バッテリ１０に記録を残せるようにすることも可能である。 <Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in the present embodiment, as shown in FIG. 1 and the like, strip-like voltage signal extraction portions 24a and 24b are projected upward from the upper side of the lead plate main body 24m, and the voltage signal extraction portions 24a and 24b are extended. An example is shown in which the tip of each is connected to the terminals 36 and 37 of the substrate 30. However, as shown in FIG. 5, voltage signal extraction portions 24 a and 24 b are provided on one end side and the other end side of the upper side of the lead plate main body 24 m, and the voltage signal extraction portions 24 a and 24 b and the terminals 36 and 37 of the substrate 30 are provided. Can be connected by signal lines 38 and 39. Thus, by using the signal lines 38 and 39, the shape of the lead plate 24 is not complicated, and the molding becomes easy.
In this embodiment, the lower limit setting voltage UV1 can be set only by the No11 to No14 voltage monitoring unit 32, but the lower limit setting voltage is set by both the No11 to No14 voltage monitoring unit 32 and the No21 voltage monitoring unit 33. It is also possible to make it possible. In this case, it is preferable to change the values of the lower limit setting voltage UV1 of the No11 to No14 voltage monitoring unit 32 and the lower limit setting voltage UV2 of the No21 voltage monitoring unit 33. As a result, it becomes possible to detect failures in the voltage monitoring units 32 and 33, wiring defects, etc. at an early stage based on the operation order of the No11 to No14 voltage monitoring unit 32 and the No21 voltage monitoring unit 33 during discharge.
Moreover, in this embodiment, although the example which monitors the voltage of each cell S1-S4 with the No11-No14 voltage monitoring part 32 was shown, for example, the voltage of each cell S1-S4 with one voltage monitoring part is shown. You may make it monitor. It is also possible to divide the No21 voltage monitoring unit 33 into a plurality of parts.
Furthermore, when the voltage of the cells S1 to S4 rises during charging and exceeds the upper limit set voltage OV2 of the No21 voltage monitoring unit 33 (when the No21 voltage monitoring unit 33 is activated), the power tool battery 10 can be recorded. It is also possible to do so.

２２・・・・・リード板
２３・・・・・リード板
２４・・・・・リード板
２４ｍ・・・・リード板本体部
２４ａ・・・・第１電圧信号取出し部位
２４ｂ・・・・第２電圧信号取出し部位
３０・・・・・基板
３２・・・・・電圧監視部
３３・・・・・電圧監視部
Ｓ１・・・・・セル
Ｓ２・・・・・セル
Ｓ３・・・・・セル
Ｓ４・・・・・セル
ＯＶ１・・・・上限設定電圧
ＯＶ２・・・・上限設定電圧
ＵＶ１・・・・下限設定電圧
22... Lead plate 23... Lead plate 24... Lead plate 24 m... Lead plate body 24 a. 2 Voltage signal extraction part 30 ... Board 32 ... Voltage monitoring part 33 ... Voltage monitoring part S1 ... Cell S2 ... Cell S3 ... Cell S4... Cell OV1... Upper limit set voltage OV2... Upper limit set voltage UV1.

Claims (7)

複数のセルを備え、充放電時に個々のセルの電圧を複数の電圧監視部で多重監視できるように構成された電動工具用バッテリであって、
前記セルの電極に接続されるリード板には、前記複数の電圧監視部のそれぞれに対応する複数の電圧信号取出し部位が形成されており、
各々の電圧信号取出し部位と各々の電圧監視部とがそれぞれ別々の導体を介して電気的に接続されていることを特徴とする電動工具用バッテリ。 A battery for a power tool that includes a plurality of cells and is configured to be able to multiplexly monitor the voltage of each cell with a plurality of voltage monitoring units during charge and discharge,
The lead plate connected to the electrode of the cell is formed with a plurality of voltage signal extraction parts corresponding to each of the plurality of voltage monitoring units,
The battery for electric tools characterized by each voltage signal extraction part and each voltage monitoring part being electrically connected through the respectively separate conductor. 請求項１に記載された電動工具用バッテリであって、
個々のセルの電圧を監視する複数の電圧監視部が異なる電圧で動作するように構成されていることを特徴とする電動工具用バッテリ。 It is a battery for electric tools described in Claim 1,
A battery for an electric tool, wherein a plurality of voltage monitoring units that monitor the voltages of individual cells are configured to operate at different voltages. 請求項２に記載された電動工具用バッテリであって、
個々のセルの電圧を監視する第１の電圧監視部と第２の電圧監視部とを備えており、
前記第１の電圧監視部、前記第２の電圧監視部は、充電時の上限電圧を設定でき、前記セルの電圧が上限設定電圧より上昇したときに電圧上限信号を出力できるように構成されており、
前記第２の電圧監視部の上限設定電圧が第１の電圧監視部の上限設定電圧よりも大きく設定されていることを特徴とする電動工具用バッテリ。 It is a battery for electric tools described in Claim 2,
A first voltage monitoring unit and a second voltage monitoring unit for monitoring the voltage of each cell;
The first voltage monitoring unit and the second voltage monitoring unit are configured to set an upper limit voltage during charging and to output a voltage upper limit signal when the voltage of the cell rises above the upper limit set voltage. And
The battery for electric tools, wherein the upper limit set voltage of the second voltage monitoring unit is set larger than the upper limit set voltage of the first voltage monitoring unit. 請求項３に記載された電動工具用バッテリであって、
前記第１の電圧監視部、前記第２の電圧監視部は、放電時の下限電圧を設定でき、前記セルの電圧が下限設定電圧より低下したときに電圧下限信号を出力できるように構成されており、
前記第２の電圧監視部の下限設定電圧が第１の電圧監視部の下限設定電圧よりも大きく設定されていることを特徴とする電動工具用バッテリ。 A battery for an electric tool according to claim 3,
The first voltage monitoring unit and the second voltage monitoring unit are configured to be able to set a lower limit voltage during discharge and to output a voltage lower limit signal when the voltage of the cell falls below the lower limit set voltage. And
The power tool battery, wherein the lower limit set voltage of the second voltage monitoring unit is set to be larger than the lower limit set voltage of the first voltage monitoring unit. 請求項３に記載された電動工具用バッテリであって、
前記第２の電圧監視部の上限設定電圧は、前記セル固有の上限充電電圧よりも低い電圧に設定されていることを特徴とする電動工具用バッテリ。 A battery for an electric tool according to claim 3,
The battery for power tools, wherein the upper limit setting voltage of the second voltage monitoring unit is set to a voltage lower than the upper limit charging voltage specific to the cell. 請求項１から請求項５のいずれかに記載された電動工具用バッテリであって、
前記電圧監視部は基板に取付けられており、
前記リード板の電圧信号取出し部位は、そのリード板から帯状に張出してその先端部が前記基板の対応する端子に接続されていることを特徴とする電動工具用バッテリ。 A power tool battery according to any one of claims 1 to 5,
The voltage monitoring unit is attached to the substrate,
A battery for an electric tool, wherein a voltage signal extraction portion of the lead plate extends from the lead plate in a band shape, and a tip portion thereof is connected to a corresponding terminal of the substrate. 請求項１から請求項５のいずれかに記載された電動工具用バッテリであって、
前記電圧監視部は基板に取付けられており、
前記リード板の電圧信号取出し部位と前記基板の端子間が信号線によって接続されていることを特徴とする電動工具用バッテリ。
A power tool battery according to any one of claims 1 to 5,
The voltage monitoring unit is attached to the substrate,
A battery for an electric tool, wherein a voltage signal extraction portion of the lead plate and a terminal of the substrate are connected by a signal line.
JP2010160444A 2010-07-15 2010-07-15 Battery for power tools Expired - Fee Related JP5462096B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2010160444A JP5462096B2 (en) 2010-07-15 2010-07-15 Battery for power tools
CN201110120257.7A CN102340043B (en) 2010-07-15 2011-05-04 Electric tool battery
US13/180,150 US8674660B2 (en) 2010-07-15 2011-07-11 Electric tool battery
EP11173651.8A EP2408044B1 (en) 2010-07-15 2011-07-12 Electric tool battery
RU2011129168/07A RU2563043C2 (en) 2010-07-15 2011-07-13 Accumulator battery for electrically-driven tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010160444A JP5462096B2 (en) 2010-07-15 2010-07-15 Battery for power tools

Publications (2)

Publication Number Publication Date
JP2012022914A true JP2012022914A (en) 2012-02-02
JP5462096B2 JP5462096B2 (en) 2014-04-02

Family

ID=44503596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010160444A Expired - Fee Related JP5462096B2 (en) 2010-07-15 2010-07-15 Battery for power tools

Country Status (5)

Country Link
US (1) US8674660B2 (en)
EP (1) EP2408044B1 (en)
JP (1) JP5462096B2 (en)
CN (1) CN102340043B (en)
RU (1) RU2563043C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013050312A (en) * 2011-08-30 2013-03-14 Gs Yuasa Corp Assembled battery monitoring device and battery pack
JP2020087873A (en) * 2018-11-30 2020-06-04 株式会社マキタ Battery pack
CN112106222A (en) * 2018-05-04 2020-12-18 罗伯特·博世有限公司 Storage battery pack

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013116184A1 (en) * 2012-01-30 2013-08-08 A123 Systems, Inc. Connecting power leads to circuit board
WO2014075630A1 (en) * 2012-11-19 2014-05-22 Shenzhen Byd Auto R & D Company Limited Protective device and protective system for battery assembly

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07147734A (en) * 1993-11-25 1995-06-06 Fuji Elelctrochem Co Ltd Charger of series batteries
JPH07163060A (en) * 1993-12-03 1995-06-23 Fuji Elelctrochem Co Ltd Over-discharge prevention circuit for series-connected battery, over-charge prevention circuit and charge/ discharge control circuit
JPH07308028A (en) * 1994-05-12 1995-11-21 Fuji Elelctrochem Co Ltd Charger for series battery
JPH1056742A (en) * 1996-08-06 1998-02-24 Matsushita Electric Ind Co Ltd Overcharge protective circuit for secondary circuit
JPH11176480A (en) * 1997-12-09 1999-07-02 Denso Corp Battery control device for assembly battery for electric vehicle
JP2003086169A (en) * 2001-09-12 2003-03-20 Japan Storage Battery Co Ltd Battery with connecting terminal
JP2003121516A (en) * 2001-10-09 2003-04-23 Furukawa Battery Co Ltd:The Measurement device for internal resistance of storage battery
JP2007143284A (en) * 2005-11-17 2007-06-07 Matsushita Electric Works Ltd Battery pack for power tool
WO2009078136A1 (en) * 2007-12-18 2009-06-25 Panasonic Corporation Voltage equalization circuit
JP2009541959A (en) * 2006-06-26 2009-11-26 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Battery sensor unit manufacturing method and battery sensor unit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1513930A (en) * 1974-12-20 1978-06-14 Seiko Instr & Electronics Battery voltage detecting device
RU2043678C1 (en) * 1991-06-28 1995-09-10 Титов Борис Григорьевич Chemical source of electric energy
JP3322542B2 (en) * 1995-11-30 2002-09-09 三洋電機株式会社 Charging circuit
WO2000070702A1 (en) * 1999-05-17 2000-11-23 Matsushita Electric Industrial Co., Ltd. Circuit and device for protecting secondary battery
DE19959019A1 (en) * 1999-12-08 2001-06-13 Bosch Gmbh Robert Method for status detection of an energy store
JP4138204B2 (en) * 2000-04-28 2008-08-27 松下電器産業株式会社 Charge / discharge control apparatus and method
JP2005160169A (en) * 2003-11-21 2005-06-16 Texas Instr Japan Ltd Battery protection circuit
RU2289179C1 (en) * 2005-06-08 2006-12-10 Федеральное государственное унитарное предприятие "Научно-производственное объединение прикладной механики им. академика М.Ф. Решетнева" Method for servicing nickel-hydrogen storage battery in off-line power supply system
WO2007033689A1 (en) 2005-09-20 2007-03-29 Metabowerke Gmbh Rechargeable battery pack and electrical hand tool device
JP4490926B2 (en) * 2006-01-20 2010-06-30 矢崎総業株式会社 Voltage detector
JP5083588B2 (en) * 2006-03-31 2012-11-28 日立工機株式会社 Lithium battery pack
DE102006061270B4 (en) 2006-12-22 2021-10-14 Robert Bosch Gmbh Battery pack and battery module
WO2008106641A1 (en) * 2007-03-01 2008-09-04 Johnson Controls - SAFT Advanced Power Solutions, LLC Battery system
RU67778U1 (en) * 2007-06-18 2007-10-27 ОАО "Аккумуляторная компания "Ригель" LITHIUM ION BATTERY
JP2010160444A (en) 2009-01-09 2010-07-22 Nippon Hoso Kyokai <Nhk> Video projector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07147734A (en) * 1993-11-25 1995-06-06 Fuji Elelctrochem Co Ltd Charger of series batteries
JPH07163060A (en) * 1993-12-03 1995-06-23 Fuji Elelctrochem Co Ltd Over-discharge prevention circuit for series-connected battery, over-charge prevention circuit and charge/ discharge control circuit
JPH07308028A (en) * 1994-05-12 1995-11-21 Fuji Elelctrochem Co Ltd Charger for series battery
JPH1056742A (en) * 1996-08-06 1998-02-24 Matsushita Electric Ind Co Ltd Overcharge protective circuit for secondary circuit
JPH11176480A (en) * 1997-12-09 1999-07-02 Denso Corp Battery control device for assembly battery for electric vehicle
JP2003086169A (en) * 2001-09-12 2003-03-20 Japan Storage Battery Co Ltd Battery with connecting terminal
JP2003121516A (en) * 2001-10-09 2003-04-23 Furukawa Battery Co Ltd:The Measurement device for internal resistance of storage battery
JP2007143284A (en) * 2005-11-17 2007-06-07 Matsushita Electric Works Ltd Battery pack for power tool
JP2009541959A (en) * 2006-06-26 2009-11-26 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Battery sensor unit manufacturing method and battery sensor unit
WO2009078136A1 (en) * 2007-12-18 2009-06-25 Panasonic Corporation Voltage equalization circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013050312A (en) * 2011-08-30 2013-03-14 Gs Yuasa Corp Assembled battery monitoring device and battery pack
CN112106222A (en) * 2018-05-04 2020-12-18 罗伯特·博世有限公司 Storage battery pack
JP2020087873A (en) * 2018-11-30 2020-06-04 株式会社マキタ Battery pack
JP7195124B2 (en) 2018-11-30 2022-12-23 株式会社マキタ battery pack

Also Published As

Publication number Publication date
CN102340043A (en) 2012-02-01
EP2408044B1 (en) 2013-09-11
CN102340043B (en) 2014-08-06
RU2563043C2 (en) 2015-09-20
JP5462096B2 (en) 2014-04-02
US20120013307A1 (en) 2012-01-19
RU2011129168A (en) 2013-01-20
EP2408044A1 (en) 2012-01-18
US8674660B2 (en) 2014-03-18

Similar Documents

Publication Publication Date Title
JP4196122B2 (en) Battery pack
JP5746268B2 (en) Battery cell voltage measuring apparatus and measuring method
US8564325B2 (en) Voltage detection device and system
JP5462096B2 (en) Battery for power tools
JP6382453B2 (en) Battery monitoring device
JP5974849B2 (en) Battery monitoring device
CN101460859A (en) Method for judging abnormality of battery pack, and battery pack
JP4270154B2 (en) Battery voltage detection controller
JP2012122856A (en) Battery pack device
US8618806B2 (en) Circuits and methods for cell number detection
JP6724693B2 (en) Battery short circuit determination system
US9863993B2 (en) Storage battery monitoring device with wiring disconnection detection
WO2011119671A2 (en) System and method for assessing adc operation and voltage of a battery pack
JP2012088106A (en) Battery state monitoring apparatus
JPH0915311A (en) Failure detection device for battery set
CN103545859A (en) Battery pack
JP6787705B2 (en) Anomaly detector and battery system
JP2016096592A (en) Monitoring device for battery pack, power storage device and wire breaking diagnosis method
CN111837290A (en) Control device for lithium ion secondary battery and control method thereof
JP2006064639A (en) Cell voltage monitoring device
JP5783116B2 (en) Battery degradation diagnosis method and charge / discharge monitoring control system
JP5544965B2 (en) Power supply control system
JP5106084B2 (en) Device for equalizing stored battery energy
JP2015102336A (en) Battery monitoring device
JP2014134488A (en) Battery monitoring device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130128

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131218

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20140107

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20140116

R150 Certificate of patent or registration of utility model

Ref document number: 5462096

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees